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Issue 6, 2018
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Gram-scale synthesis of single-crystalline graphene quantum dots derived from lignin biomass

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Abstract

Renewable, cheap and green biomass resources could meet the urgent need for producing graphene quantum dots (GQDs) on a large scale if high quality can be obtained. Here we report the gram-scale synthesis of single-crystalline GQDs derived from lignin biomass via a two-step method. The synthetic processes involve the oxidized cleavage step followed by the aromatic refusion step of alkali lignin molecules. Notably, this approach successively converts the biomass commonly considered as waste into a high-valued nanoscale product. The as-prepared single-crystalline GQDs, presenting a hexagonal honeycomb graphene network, are 1–3 atomic layers thick. Due to the bright fluorescence, up-conversion properties, long-term photostability, water solubility and biocompatibility, these high quality GQDs have potential to be excellent nanoprobes for multicolour bioimaging. The utilization of renewable biomass resources paves the way for green, low-cost and large-scale production of high quality GQDs and allows for the development of sustainable applications.

Graphical abstract: Gram-scale synthesis of single-crystalline graphene quantum dots derived from lignin biomass

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Publication details

The article was received on 26 Oct 2017, accepted on 07 Feb 2018 and first published on 07 Feb 2018


Article type: Paper
DOI: 10.1039/C7GC03218H
Citation: Green Chem., 2018,20, 1383-1390
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    Gram-scale synthesis of single-crystalline graphene quantum dots derived from lignin biomass

    Z. Ding, F. Li, J. Wen, X. Wang and R. Sun, Green Chem., 2018, 20, 1383
    DOI: 10.1039/C7GC03218H

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